mysql_connect(): Can't connect to MySQL server on '10.20.40.1' (111)

E_WARNING(2)
FILE: /data/cell/web/mars/domains/in/decentralhost.in/www/adodb/drivers/adodb-mysql.inc.php
LINE: 364
Traceback (most recent call last):
File "/data/cell/web/mars/domains/in/decentralhost.in/www/adodb/drivers/adodb-mysql.inc.php", line 364, in function mysql_connect
argument 0 is ' 10.20.40.1 ', argument 1 is ' dch ', argument 2 is ' 2AYC8AQA96P2KPPQ ', argument 3 is ' ', argument 4 is ' 0 ',
called by
File "/data/cell/web/mars/domains/in/decentralhost.in/www/adodb/adodb.inc.php", line 525, in class ADODB_mysql=> method _connect
argument 0 is ' 10.20.40.1 ', argument 1 is ' dch ', argument 2 is ' 2AYC8AQA96P2KPPQ ', argument 3 is ' dch ',
called by
File "/data/cell/web/mars/domains/in/decentralhost.in/www/zcom/db.inc.php", line 51, in class ADOConnection=> method Connect
argument 0 is ' 10.20.40.1 ', argument 1 is ' dch ', argument 2 is ' 2AYC8AQA96P2KPPQ ', argument 3 is ' dch ',
called by
File "/data/cell/web/mars/domains/in/decentralhost.in/www/zcom/data/ZDBAware.php", line 13, in function zdbconnect
called by
File "/data/cell/web/mars/domains/in/decentralhost.in/www/lib/classes/Session.php", line 72, in class ZDBAware=> method ZDBAware
called by
File "/data/cell/web/mars/domains/in/decentralhost.in/www/lib/init.inc.php", line 132, in class Session=> method Session
called by
File "/data/cell/web/mars/domains/in/decentralhost.in/www/modules/skins/skins.inc.php", line 16, in function is_logged_in
called by
File "/data/cell/web/mars/domains/in/decentralhost.in/www/lib/init.inc.php", line 115, in function get_skin
called by
File "/data/cell/web/mars/domains/in/decentralhost.in/www/index.php", line 2, in function require_once
argument 0 is ' /data/cell/web/mars/domains/in/decentralhost.in/www/lib/init.inc.php ',
Current Error
Error Type: E_WARNING
Error Number: 2
Error Line: 364
Error File: /data/cell/web/mars/domains/in/decentralhost.in/www/adodb/drivers/adodb-mysql.inc.php
Error String: mysql_connect(): Can't connect to MySQL server on '10.20.40.1' (111)
Previous Error
Error Type: E_NOTICE
Error Number: 8
Error File: /data/cell/web/mars/domains/in/decentralhost.in/www/zcom/debug.php
Error Line: 67
Error String: Undefined index: HTTPS

Can't connect to MySQL server on '10.20.40.1' (111)